The real world is where the monsters are. Not the blasphemous fiends you see in your mind.
Ulamog is the smallest of the three titans. His head resembles a bony helmet but lacks eyes and lacks expression. Most of his body has the color of exposed muscle and is covered with bony plates. He moves of a writhing mass of tentacles studded with bony spikes. His two arms split at the elbow and lead to four hands. A stench of rotting meat, mushroom and sulfur surrounds him all the time. This is why he also is known as "The Reeking Titan". Ulamog is the Titan of Consumption. He and his brood consume living and unliving matter alike, and drain mana and vital energy from everything in the vicinity like a maelstrom. His processors transform the consumed energy into spell-like effects that defy the understanding of Zendikari mages, wasting plagues, deadly parasites and endless teeming spawn. They leave the white chalky latticelike structures in their wake. Everything including water is transformed into the white manaless husk of what it once was. Ulamog is emblematic of plague, the blind bonds between parasite and host, and overabundance. Ulamog is creation and destruction wrapped together in unholy harmony. After their imprisonment by Ugin, Sorin Markov and Nahiri, Ulamog and the other two titans (Kozilek and Emrakul) were locked away from the planes. A few thousand years after the imprisonment of the Eldrazi by The Three, the noxious creative force of Ulamog became an infection that took hold of the people who dared to live in Akoum's mountains despite the tectonic instability of the region. They became a sort of cult devoted to an imagined deity of the mountains, established a temple near the site of the prison, and began performing rituals inspired by their growing madness. The cultists avoided the notice of the increasingly reclusive Nahiri and over time and multiple generations, their rituals actually proved effective in loosening the bonds of the Eldrazi prison. Though the titans themselves still couldn't escape, teeming hordes of their broods sprang into existence. This swarming host devastated Zendikar. During the rampage, the cultists underwent a transformation. Only twelve of them survived the initial wave of spawn emerging from the prison, but those twelve became the first vampire bloodchiefs, the progenitors of the vampire race. Whether they were originally human, kor or a race of their own, they became something entirely new - and utterly enslaved to the will of Ulamog. The Eldrazi took the plane's vampires as a race of servants, adapting their very anatomy for servitude. Hooklike horns grew from the vampires' shoulders, convenient handles for the Eldrazi to dominate their slave race and, for millennia afterward, carnal symbols of the vampires' heritage of persecution. The vampires, forced to conspire in the campaign of destruction against their own homeworld, had their identity and tribal memory erased forever. After Nahiri enforced the Eldrazi prison all on her own, no more broods came to life. She trusted the people of Zendikar to deal with them and left the plane. The vampires remained, now free of Ulamog's yoke. Millenia later, the subsequential actions of Jace Beleren, Chandra Nalaar, Sarkhan Vol and Nissa Revane freed the Eldrazi titans. After their release, Ulamog was the most prominent titan on the surface of Zendikar. Its brood caused the Slaughter at Sea Gate.